RTMPT connection time

HI!

Iv got a succesfull FMS project. I would like to configure it to work by RTMPT. So I just changed the url to use RTMPT. IT works great. Only one problem. When connecting to FMS:

_gatewayUrl = "rtmpt://xxx.xxx.xxx.xxx:80/myname";

nc.connect(_gatewayUrl, userData);

I have to work about 30 seconds to connect. When I get NetConnection.Connect.Success everything what continue goes smoothly (connecting to SO. calls etc)

What can be the problem?

Ive set ADAPTOR.HOSTPORT = :80

P.